If pine cones are placed in water, they close up. But they open up in warm and dry conditions. How do pine cones benefit from this characteristic?

Seeds develop within pinecones, which are organs of coniferous trees. Pinecones open only when environmental conditions are right and seeds are mature. Warm, dry conditions allow seeds to spread long distances on the wind and help in germination. In contrast, cold, damp weather can make seeds wet and unable to spread far from a tree.

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lheduardomarques lheduardomarques · Answer 2 · 2022-02-11T13:45:48+01:00

The pine cones are closed so that their seeds remain dry.

Why does the pine cone close when it gets wet?

When it starts to rain, the pine cones close so that their seeds remain dry. As we have seen, if we put a dry pine cone in water, it closes and if we let it dry, it opens again. The pine cone "knows" when it is going to rain, as it closes when the air is wetter and opens when the air is drier.

With this information, we can conclude that the pine cones close so that their seeds remain dry, thus being a mechanism of propagation of the species.

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